Check where user is present
Get a list of channels a user is present in.
Your app's subscribe key from Admin Portal.
A UTF-8 encoded string of up to 64 characters used to identify the client.
String which is either the auth key (PAM v2) or a valid token (Access Manager) used to authorize the operation if access control is enabled.
The JSONP callback name to wrap the function in.
Signature used to verify that the request was signed with the secret key associated with the subscribe key.
If Access Manager is enabled, either a valid authorization token or a signature are required. Check Access Manager documentation for details on how to compute the signature.
Unix epoch timestamp used as a nonce for signature computation. Must have no more than ± 60 seconds offset from NTP.